Mahabharata 3.233.9
राज्ञस्तु वचनं श्रुत्वा धर्मराजस्य धीमतःक्रमेण मृदुना युद्धमुपक्रामन्त भारत
rājñastu vacanaṃ śrutvā dharmarājasya dhīmataḥkrameṇa mṛdunā yuddhamupakrāmanta bhārata
Our plain-language meaning of this verse is waiting for scholar review.